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Microchip Technology 24LC02BT/SN
- Part No.:
- 24LC02BT/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC02BT/SN.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,041
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Product details
Overview
24LC02BT/SN from Microchip Technology Inc. is a 2-Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory with hardware write-protection, 400 kHz max clock frequency, 2.5V–5.5V supply range, and industrial temperature rating (–40°C to +85°C). It supports page writes up to 8 bytes and is commonly used for configuration storage in embedded microcontroller systems.
For engineers reviewing the 24LC02BT/SN datasheet, 24LC02BT/SN pinout, 24LC02BT/SN application, or 24LC02BT/SN equivalent, key selection considerations include VCC compatibility (≥2.5V), I²C timing constraints at 400 kHz, WP pin logic level for write-enable control, and SOIC-8 package footprint integration into space-constrained PCB layouts.
Technical Context
The 24LC02BT/SN implements a two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal address pointer enables current-address, random, and sequential read modes without external address latching.
Write operations are self-timed with a maximum 5 ms erase/write cycle; acknowledge polling is supported to detect completion. The device uses an 8-byte page buffer and enforces physical page boundaries - crossing a boundary causes wraparound within the same page, requiring firmware-level boundary management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit), sufficient for storing calibration data, MAC addresses, or small firmware parameters |
| Interface | I²C-compatible two-wire bus, compatible with standard microcontroller I²C peripherals without protocol translation |
| Max Clock Frequency | 400 kHz at VCC ≥ 2.5V, enabling ~400 byte/s write throughput in byte mode |
| Supply Voltage | 2.5V–5.5V, compatible with 3.3V and 5V logic domains but not 1.8V systems |
| Write Protection | Hardware-enabled via WP pin tied to VCC, blocking all write cycles while allowing full read access |
| Endurance & Retention | 1 million erase/write cycles and >200 years data retention at 25°C, suitable for long-life industrial deployments |
| Operating Temp | –40°C to +85°C (Industrial grade), validated for use in automotive body electronics and industrial controllers |
Pinout & Package
24LC02BT/SN is supplied in an 8-lead SOIC (Small Outline Integrated Circuit) package, 3.90 mm wide, with standard 1.27 mm pitch. Pin 1 is marked by a beveled corner or notch on the package top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input | No internal connection; may be left floating or tied to VSS/VCC without affecting operation |
| A1 | Address Input | No internal connection; unused in 2-Kbit variant, no impact on I²C addressing |
| A2 | Address Input | No internal connection; device responds only to fixed 4-bit client address '1010' |
| VSS | Ground | Reference return path for all signals; must be low-impedance connection to system GND plane |
| SDA | Serial Data I/O | Open-drain bidirectional line requiring external pull-up resistor (2–10 kΩ depending on speed) |
| SCL | Serial Clock Input | Input-only clock line synchronized to host controller; determines timing of all I²C transfers |
| WP | Write-Protect Input | Active-high enable: tied to VCC blocks all writes; tied to VSS enables full read/write access |
| VCC | Power Supply | Primary power input; must be decoupled with 0.1 µF ceramic capacitor near pin |
Key Features
| Feature | Design Value |
|---|---|
| Page Write Buffer | 8-byte buffer enables burst writes without repeated start/stop overhead, improving firmware efficiency |
| Schmitt Trigger Inputs | Input hysteresis ≥0.05×VCC rejects noise spikes on SDA/SCL lines in electrically noisy environments |
| Output Slope Control | Controlled edge rates prevent ground bounce during fast transitions, reducing EMI in mixed-signal designs |
| Hardware Write-Protection | Dedicated WP pin allows field-programmable lockout of memory writes without firmware intervention |
| ESD Robustness | ≥4 kV HBM protection on all pins ensures reliability during handling and board assembly |
Applications
| Smart Meter Calibration Storage | Industrial PLC Configuration Memory |
|---|---|
Use Scenario: Storing meter-specific calibration coefficients and utility tariff tables that must persist across power cycles and firmware updates. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed infrequently via I²C during initialization or field service. Use Value: Enables field-upgradable calibration without replacing MCU or reprogramming flash, reducing service cost and downtime. | Use Scenario: Retaining user-defined I/O mapping, alarm thresholds, and communication settings in programmable logic controllers. IC Role / Device Role / Timing Role: Dedicated parameter store isolated from main program flash, preventing corruption during firmware updates. Use Value: Guarantees deterministic startup behavior and preserves operator settings across power loss or firmware reloads. |
| Automotive Body Control Module ID Storage | Medical Device Serial Number Registry |
Use Scenario: Holding unique vehicle identification codes (VIN-derived), module part numbers, and production date stamps in BCMs. IC Role / Device Role / Timing Role: Secure, tamper-resistant identity storage accessible only during boot or diagnostic sessions. Use Value: Supports AEC-Q100-compliant traceability and enables secure over-the-air update authentication. | Use Scenario: Recording device serial numbers, manufacturing lot codes, and regulatory compliance flags in Class II medical instruments. IC Role / Device Role / Timing Role: Immutable audit trail storage with guaranteed 200+ year data retention for FDA-mandated recordkeeping. Use Value: Meets ISO 13485 data integrity requirements without relying on volatile RAM or complex file-system overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA02T/SN | Lower VCC min (1.7V), same 400 kHz speed, identical SOIC-8 package and pinout | Better suited for battery-powered or 1.8V/2.5V systems where 24LC02BT/SN cannot operate | Select 24AA02T/SN when supply voltage may dip below 2.5V; otherwise 24LC02BT/SN offers tighter industrial temp validation |
| AT24C02D-SSHM-T | Same 2-Kbit size and I²C interface, but rated for 1 MHz at 2.5–5.5V and offered in SOIC-8 with wettable flanks | Enables higher-speed configuration reads in time-critical boot sequences; wettable flanks aid automated optical inspection | Choose AT24C02D-SSHM-T if 1 MHz timing or enhanced solder-joint inspection is required; verify WP pin behavior matches design intent |
Compared with 24AA02T/SN, the 24LC02BT/SN trades lower-voltage operation for stronger industrial temperature validation; versus AT24C02D-SSHM-T, it sacrifices speed and advanced packaging for proven Microchip reliability and direct drop-in replacement in legacy SOIC-8 layouts.
Availability
24LC02BT/SN is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, automotive body control modules, and medical device serial number registry requiring stable component supply and long-term lifecycle support.
Supply support for 24LC02BT/SN includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology Inc. is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and nonvolatile memory solutions for embedded control applications.
The 24LC02B family was designed specifically for reliable, low-power configuration and parameter storage in industrial and automotive systems where data integrity and long-term retention are critical.
FAQ
What is the minimum supply voltage required for reliable operation of the 24LC02BT/SN?
The 24LC02BT/SN requires a minimum VCC of 2.5V for guaranteed operation across its full industrial temperature range (–40°C to +85°C). Operation below 2.5V is not specified and may result in incomplete writes, read errors, or failure to respond to I²C commands. This distinguishes it from the 24AA02T/SN, which supports down to 1.7V.
Does the 24LC02BT/SN support 1 MHz I²C communication?
No, the 24LC02BT/SN is rated for a maximum clock frequency of 400 kHz at VCC ≥ 2.5V. Attempting 1 MHz operation will violate AC timing specifications (e.g., THIGH, TLOW, TR/TF), leading to unreliable ACK generation, data corruption, or bus lockup. For 1 MHz support, consider the 24FC02 or AT24C02D-SSHM-T instead.
How does the WP pin function on the 24LC02BT/SN, and what happens when it is left unconnected?
On the 24LC02BT/SN, the WP pin is active-high: tying it to VCC disables all write operations (including page and byte writes), while tying it to VSS enables full read/write access. If left unconnected (floating), WP state is undefined and may cause intermittent write protection - Microchip specifies it must be externally biased to VSS or VCC for predictable behavior.
Can the 24LC02BT/SN be used in place of the 24LC02B in existing designs?
Yes - the 24LC02BT/SN is a temperature-graded variant (Industrial) of the base 24LC02B, sharing identical electrical specifications, pinout, package (SOIC-8), and functional behavior. The "T" suffix denotes tape-and-reel packaging, and "SN" confirms the SOIC-8 package; no layout or firmware changes are needed for substitution.
What is the maximum number of bytes that can be written in a single page write operation for the 24LC02BT/SN?
The 24LC02BT/SN supports up to 8 bytes per page write operation, aligned to 8-byte physical page boundaries (addresses 0x00–0x07, 0x08–0x0F, etc.). Writing across a boundary (e.g., starting at 0x07) causes wraparound to the start of the same page, overwriting prior data - firmware must enforce alignment or split writes at boundaries.
24LC02BT/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 2Kbit
- Memory Organization:
- 256 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24LC02BT/SN FAQ
1.How can I place an order for 24LC02BT/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC02BT/SN on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 24LC02BT/SN reliable?
The price and inventory of 24LC02BT/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC02BT/SN is usually 5 days.
3.What payment methods are accepted for 24LC02BT/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC02BT/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC02BT/SN?
24LC02BT/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC02BT/SN order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 24LC02BT/SN?
For technical support, including 24LC02BT/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC02BT/SN requirements.
6.How does Aetrix verify that 24LC02BT/SN is sourced from the original manufacturer or authorized distributors?
All 24LC02BT/SN products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 24LC02BT/SN meets industry standards.
7.What is the process for return or replacement of 24LC02BT/SN?
All 24LC02BT/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC02BT/SN, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 24LC02BT/SN part is unused and in its original packaging.
Return procedure for 24LC02BT/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC02BT/SN Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
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